2017 Highworth formation
|
Reconstruction of the 2017 Highworth formation | ||
| 1. |
| Draw a circle. Draw and extend the horizontal and vertical centerlines. |
| 2. |
| Copy circle 1 two times, to its righthand intersection with the horizontal, and its upper intersection with the vertical centerline. |
| 3. |
| Draw the connecting line between the intersections of circles 2. |
| 4. |
| Construct the inscribed dodecagon (regular 12-sided polygon) of circle 1, with one angular point on line 3. |
| 5. |
| Construct the inscribed dodecagon of circle 1, pointing up. Number the angular points of both dodecagons 4 and 5 consectutively 1 - 24 clockwise, starting at the top. |
| 6. |
| Construct a circle centered at the lower intersection of circle 1 and the vertical centerline, passing through angular point nr. 8. |
| 7. |
| Copy circle 6 to angular point nr. 1. |
| 8. |
| Copy circle 6 to angular point nr. 23. |
| 9. |
| Copy circle 6 to angular point nr. 21. |
| 10. |
| Copy circle 6 eight more times, to the other angular points of dodecagon 5. |
| 11. |
| Construct a circle concentric to circle 1, passing through the righthand intersection of circles 6 and 7. |
| 12. |
| Construct a circle concentric to circle 1, passing through the righthand intersection of circles 6 and 8. |
| 13. |
| Construct a circle concentric to circle 1, passing through the upper righthand intersection of circles 6 and 9. |
| 14. |
| Construct the circumscribed dodecagon of circle 1, pointing up. |
| 15. |
| Construct the circumscribed circle of dodecagon 14. |
| 16. |
| Construct the circumscribed dodecagon of circle 15, with the mid-point of one side at the top of dodecagon 14. |
| 17. |
| Construct the circumscribed circle of dodecagon 16. |
| 18. |
| Construct a circle centered at the lower intersection of circle 7 and the vertical centerline, tangent to circle 9 at the near side. |
| 19. |
| Copy circle 18 four times, to the intersections of circle 15 with the horizontal and vertical centerlines. |
| 20. |
| Construct a circle centered at the righthand intersection of circle 8 and the horizontal centerline, tangent to circle 6 at the near side. |
| 21. |
| Copy circle 20 to the center of the upper circle 19. |
| 22. |
| Construct a circle concentric to circle 1, tangent to circle 21 at the upper side. |
| 23. |
| Construct a circle centered at the upper intersection of circle 12 and the vertical centerline, tangent to circle 11 at the upper side. |
| 24. |
| Copy circle 23 to the center of circle 21. |
| 25. |
| Construct a circle concentric to circle 1, tangent to circle 24 at the upper side. |
| 26. |
| Circles 6, 7, 8, 9, 10, 11, 12, 13, 15, 17, 19, 22, and 25, are used for the final reconstruction. |
| 27. |
| Remove all parts not visible within the formation itself. |
| 28. |
| Colour all areas corresponding to standing... |
| 29. |
| ...or to flattened crop, and finish the reconstruction of the 2017 Highworth formation. |
| 30. |
| The final result, matched with the aerial image. |
| Copyright © 2017, Zef Damen, The Netherlands |
